What type of synthetic oils are commonly used in new HFC systems and for retrofitting HCFC equipment to HFC refrigerants? (A) A) Polyolester (B) B) Glycol (C) A) Alkylbenzene (D) D) Mineral oil

When it comes to new HFC systems and retrofitting HCFC equipment to HFC refrigerants, polyolester (POE) oils are the MVPs! They’ve got excellent miscibility with HFC refrigerants, allowing for optimal performance and efficiency. Plus, they have great thermal stability which means they can handle the higher temperatures without breaking a sweat! Alkylbenzene oils also make an appearance, especially in situations where you might need compatibility with a range of refrigerants. They have a good track record in older equipment but may need a little help when mated with HFCs. So, while they aren’t the star of the show, they still play a role in keeping things running smoothly!